Cholera prevalence in the country is down by five per cent, according to a weekly report by the Ministry of Health, Social welfare, Gender, Elderly and Children released in Dar es Salaam.

According to a report released by the Deputy Minister Dr Hamis Kigwangalla, there were 499 cholera cases with six deaths registered between February 15 and 21. He pointed out that 11 regions were reported to have cholera prevalence.

The Bill and Melinda Gates Foundation has turned its attention to the Zika virus outbreak, and its founders said the response to the crisis, which may be linked to devastating birth defects in South America, has been better than for the 2014 Ebola outbreak in Africa.

"We got deeply involved in Ebola, and we're already getting deeply involved in Zika," said Melinda Gates in an interview ahead of release of the foundation's annual letter on Monday.

CDC director Tom Frieden talks to TIME about what we're learning in the battle against the Zika virus

As the Zika virus continues to spread through the Americas, health officials in the U.S. are hurrying to learn more about the virus and prepare for cases. Currently, the emergency operations center at the U.S. Centers for Disease Control and Prevention (CDC) is on its highest-level alert for the Zika response — only the fourth time in its history. We spoke to CDC director Dr. Tom Frieden about the ongoing outbreak and what we are learning along the way.

As the rainy season approaches in Wajir in northeastern Kenya, Médecins Sans Frontières (MSF) is warning that the substandard water and sanitation situation is creating ideal conditions for a future increase in cholera cases. While today patient numbers in the cholera treatment centre in Wajir Hospital are stable, the organization is urging for an immediate improvement in sanitation services to avoid another spike in the outbreak.

The Obama administration plans to use an additional $200 million to expand its fight against malaria, expanding services to 70 million more people in Africa and accelerating a global effort to eradicate the disease.